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SI9136 Datasheet(PDF) 11 Page - Vishay Siliconix

Part # SI9136
Description  Multi-Output Power-Supply Controller
PDF  16 Pages
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Manufacturer  VISHAY [Vishay Siliconix]
Direct Link  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SI9136 Datasheet(HTML) 11 Page - Vishay Siliconix

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Document Number: 70818
S11-0975-Rev. D, 16-May-11
www.vishay.com
11
Vishay Siliconix
Si9136
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
DETAIL FUNCTIONAL BLOCK DIAGRAM
Figure 5. Buck Block Diagram
+
-
+
-
Logic
Control
-
+
BBM
5/3 ON/OFF_
1X
DH
DL
LX_
VL
DH
DL
REF
PWMCMP
Pulse
Skipping
Control
Current
Limit
SYNC
Rectifier Control
20 mV
t
CS_
FB_
FB5
Internal voltage
divider is only
used on 5 V
output.
SLC
RX
RY
BST_
Error
Amplifier
V
Soft-Start
Figure 6. PWM Flyback Block Diagram
+
-
+
-
+
-
+
-
t
DH
DL
FBFY
R1
R2
DHFY
DLFY
BSTY
LXFY
Pulse
Skipping
Control
PWM
Comparator
100 mV
REF
COMP
ICSN
ICSP
C/S
Amplifier
Current Limit
ON/OFF
Error
Amplifier
Logic
Control
Soft-Start
V



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